GENERAL 21 Sheet Metal Gauge

The 21 Sheet Metal Gauge is ideal for gauging uncoated sheet metal, plate iron, and steel. Made of satin-finished, heavy gauge hardened, and tempered steel. Decimal equivalents of sizes are stamped on the back. Range: American Standard wire gages 0 to 36. The dimensions are 3-1/4 in. diameter x 3/32 in. thick.

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